Splitting Hydrogen and Oxygen with Sunlight  E-mail
Written by Jozef Winter   
Tuesday, 25 September 2007


With most car companies looking toward fuel cells as a clean energy source, it seems that hydrogen, for better or worse, will be a key player in our green future. The problem is, splitting water into hydrogen and oxygen is an energy-intense process and if you are using coal-fired plants to do the work, you are taking 1 step forward and 1 step back.
 
Martin Demuth and his team of researchers at the Max Planck Institute, however, have other ideas. They've decided to circumvent using electrical current to split the water and instead use a semiconductor in a process not unlike photosynthesis in plants. The semiconductor acts as a photocatalyst, infusing the water molecule with energy in the presence of sunlight, and voila! Hydrogen and oxygen!
 
The idea has been around for a while, and some tests have already been conducted; however, this new semiconductor, made of titanium disilicide, absorbs light energy over a range of the solar spectrum, making it more efficient. It also has a unique property in that it will actually capture and store the hydrogen and oxygen separately, for later siphoning off. This technology could potentially find early adoption by the Navy who has sunlight, water, and surface area in abundance.

Via Physorg

Image from Dr. Demulth's Website
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Comments (6)add
Global Warming prediction exchange is se
written by caveat bettor , September 25, 2007
I just created a global warming prediction market here:

http://globalwarming.inklingmarkets.com/

Please sign up and trade ($5,000 of play money). Let's hope we can get a real market up and running, and better inform our policy on global warming.
Navy
written by Ashley L. now F. , September 26, 2007
If adopted by the Navy, any word on what they'd use it for specifically?
Link exchange
written by fhmtech , September 26, 2007
Hi,

I am interested in link exchange with ecogeek.org. My blog is also about the environment. It is www.bdpollution.com. If interested do let me know.

Thanking you
fhmtech
hydrogen production
written by Steve Nelson , November 08, 2007
The majority of the world's hydrogen production is created using a technique known as "steam reformation". Basically by mixing super heated steam at around 750 degrees F with Methane (CH4) it produces H and CO, then a lower, super heated steam mixing with the carbon monoxide produces a little more H and CO2 output. This can all be done with solar-steam, no coal required.
...
written by Antonio de Jesus Biag Jr. , February 28, 2008
Would the rate of infusion be adequate to cover the expense for electricity and other maintenances?
World Longest sea beach
written by salvi , July 03, 2008
I am under tense about my country which may be under water after 50 years. World will loss longest beach.
So i would like to link exchange with your site to save the natural ecosystem of my country.

www.bangladeshtourism.blogspot.com

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Jozef Winter
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